Subtract 81/12 from 45/15
1st number: 3 0/15, 2nd number: 6 9/12
45/15 - 81/12 is -15/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
45/15 = 45 × 4/15 × 4 = 180/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
81/12 = 81 × 5/12 × 5 = 405/60 - Subtract the two like fractions:
180/60 - 405/60 = 180 - 405/60 = -225/60 - After reducing the fraction, the answer is -15/4
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